The last few cars I have had owners have found little tricks, an example I had an 07 Z06, and If you pulled Fuse #10 the electronic exhaust valves would be 100% open all the time...

anything with the G37S convertible?

 

You didn't even trying browsing the forum did you lol there s a whole section on DIYs and there s a video somewhere that shows the various lil tricks that are not listed in the user manual.

 

I browsed the DIY forum.. but I did not see anything interesting...Is there anything performance wise that you know of?

 

Nope, there's not much performance wise that you can do that won't cost you.
There's a few clutch modifications that are free, or really close to it, but that won't get you mroe power or anything like that. And you have to have a manual tranny.

 

cut a hole in front of your intakes ? lol
i did mine

 

Plasti-Dip... its pretty much free, $10 if that!